Changes made to brake performance test

On 23 June 2013 changes to the brake performance test procedures and standards were introduced to the MOT test.

The minimum brake efficiency requirement for ‘M1’ vehicles, which includes all cars, first used on or after 1 September 2010 has been increased to 58%.

Brake imbalance is now only measured at maximum brake efforts, regardless of wheel lock. The failure criteria has been relaxed to greater than 30% rather than the previous 25%.  Additionally, with the exception of trikes and quads, imbalance must be checked across all axles.


Please talk to one of our MOT testers if you’d like to know more about this.

brake performance

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